Accurately identifies morphology and arrangement for the bacteria.

Accurately identifies the morphology or the arrangement, but not both bacteria.

Unable to identify either the morphology or the arrangement of bacteria.

Calculations are correct

Calculations are partially correct

Calculations are not correct

A student works independently

Student asks for help from his fellow students, but tries to work it out independently

A student makes no attempt to work independently and ask for help focusing microscope.

Sharp image, perfect focus

Somewhat in focus

Not focused

Simple stain slide is prepared perfectly

Simple stain slide has either a little too much or too little staining and/or bacteria

Simple stain slide has either excessive or no staining and/or excessive amount of or no bacteria